elepower/elepower_farming/machines/spawner.lua

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-- see elepower_papi >> external_nodes_items.lua for explanation
-- shorten table ref
local epr = ele.external.ref
-- How many seconds there are between runs
local SPAWNER_TICK = 10
local function can_dig(pos, player)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
return inv:is_empty("src")
end
local function spawn(pos, mob)
-- get meta and command
local meta = minetest.get_meta(pos)
-- TODO: ways to configure
local mlig = 0 -- min light
local xlig = 15 -- max light
local num = 4 -- max number
local pla = 24 -- player radius
local yof = 0 -- Y offset to spawn mob
-- if amount is 0 then do nothing
if num == 0 then
return
end
-- are we spawning a registered mob?
if not mobs.spawning_mobs[mob] then
return
end
-- check objects inside 9x9 area around spawner
local objs = minetest.get_objects_inside_radius(pos, 9)
local count = 0
local ent = nil
-- count mob objects of same type in area
for k, obj in ipairs(objs) do
ent = obj:get_luaentity()
if ent and ent.name and ent.name == mob then
count = count + 1
end
end
-- is there too many of same type?
if count >= num then
return
end
-- spawn mob if player detected and in range
if pla > 0 then
local in_range = 0
local objs = minetest.get_objects_inside_radius(pos, pla)
for _,oir in pairs(objs) do
if oir:is_player() then
in_range = 1
break
end
end
-- player not found
if in_range == 0 then
return
end
end
-- find air blocks within 5 nodes of spawner
local air = minetest.find_nodes_in_area(
{x = pos.x - 5, y = pos.y + yof, z = pos.z - 5},
{x = pos.x + 5, y = pos.y + yof, z = pos.z + 5},
{"air"})
-- spawn in random air block
if air and #air > 0 then
local pos2 = air[math.random(#air)]
local lig = minetest.get_node_light(pos2) or 0
pos2.y = pos2.y + 0.5
-- only if light levels are within range
if lig >= mlig and lig <= xlig and minetest.registered_entities[mob] then
minetest.add_entity(pos2, mob)
return true
end
end
return
end
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local function get_formspec(timer, power, state)
return "size[8,8.5]"..
epr.gui_bg..
epr.gui_bg_img..
epr.gui_slots..
ele.formspec.power_meter(power)..
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ele.formspec.state_switcher(7, 0, state)..
ele.formspec.create_bar(1, 0, 100 - timer, "#00ff11", true)..
"list[context;src;3.5,1.5;1,1;]"..
"image[3.5,1.5;1,1;elefarming_egg_silhouette.png]"..
"list[current_player;main;0,4.25;8,1;]"..
"list[current_player;main;0,5.5;8,3;8]"..
"listring[current_player;main]"..
"listring[context;src]"..
"listring[current_player;main]"..
epr.get_hotbar_bg(0, 4.25)
end
local function on_timer(pos, elapsed)
local refresh = false
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
local capacity = ele.helpers.get_node_property(meta, pos, "capacity")
local usage = ele.helpers.get_node_property(meta, pos, "usage")
local storage = ele.helpers.get_node_property(meta, pos, "storage")
local work = meta:get_int("src_time")
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local state = meta:get_int("state")
local is_enabled = ele.helpers.state_enabled(meta, pos, state)
local egg_slot = inv:get_stack("src", 1)
local egg_name = egg_slot:get_name()
local mob_desc = "None"
local active = "Active"
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local pow_buffer = {capacity = capacity, storage = storage, usage = 0}
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if pow_buffer.storage > usage and not egg_slot:is_empty() and
ele.helpers.get_item_group(egg_name, "spawn_egg") and is_enabled then
local mob_name = egg_name:gsub("_set", "")
if work == SPAWNER_TICK then
local spawned = 0
-- Spawn
if spawn(pos, mob_name) then
spawned = spawned + 1
end
work = 0
if spawned > 0 then
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pow_buffer.storage = pow_buffer.storage - usage
end
else
work = work + 1
end
refresh = true
mob_desc = minetest.registered_items[mob_name].description
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pow_buffer.usage = usage
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elseif not is_enabled then
active = "Off"
else
work = 0
active = "Inactive"
end
meta:set_string("infotext", ("Powered Mob Spawner %s\nMob: %s\n%s"):format(
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active, mob_desc, ele.capacity_text(capacity, pow_buffer.storage)))
local work_percent = math.floor((work / SPAWNER_TICK)*100)
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meta:set_string("formspec", get_formspec(work_percent, pow_buffer, state))
meta:set_int("storage", pow_buffer.storage)
meta:set_int("src_time", work)
return refresh
end
ele.register_machine("elepower_farming:spawner", {
description = "Powered Mob Spawner",
ele_capacity = 64000,
ele_inrush = 800,
ele_usage = 800,
ele_no_automatic_ports = true,
tiles = {
"elefarming_machine_spawner_top.png", "elefarming_machine_base.png", "elefarming_machine_side.png",
"elefarming_machine_side.png", "elefarming_machine_side.png", "elefarming_machine_side.png",
},
groups = {
oddly_breakable_by_hand = 1,
ele_machine = 1,
ele_user = 1,
cracky = 1,
tubedevice = 1,
tubedevice_receiver = 1,
},
on_construct = function (pos)
local meta = minetest.get_meta(pos)
local inv = meta:get_inventory()
inv:set_size("src", 1)
meta:set_int("src_time", 0)
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local capacity = ele.helpers.get_node_property(meta, pos, "capacity")
meta:set_string("formspec", get_formspec(0, {capacity = capacity, storage = 0}))
end,
can_dig = can_dig,
on_timer = on_timer,
})